The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 1992
Filed:
Dec. 26, 1990
Matthew J Kampling, Ypsilanti, MI (US);
Michael A Lutz, Midland, MI (US);
Kristen A Scheibert, Sanford, MI (US);
Dow Corning Corporation, Midland, MI (US);
Abstract
Acrylamide functional siloxanes are made by a method which is an improvement over the method for preparing them by reacting an amino functional siloxane in the presence of a non-aqueous solvent, a metal alkoxide, and a non-aqueous cosolvent for the metal alkoxide. The improvements include using a non-polar solvent, an alcohol cosolvent, cooling a mixture of amino functional siloxane, non-polar solvent, and non-protic acid acceptor before adding the alcohol cosolvent, and neutralizing with a mild base. Conversion of the amino functionality to acrylamide is above 95 percent, the acrylamide has low ionics, and the viscosity of the acrylamide is essentially the same as the viscosity of the starting amino functional siloxane.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile